diff options
Diffstat (limited to '')
-rw-r--r-- | src/common/CMakeLists.txt | 10 | ||||
-rw-r--r-- | src/common/free_region_manager.h | 55 | ||||
-rw-r--r-- | src/common/host_memory.cpp | 191 | ||||
-rw-r--r-- | src/common/host_memory.h | 15 | ||||
-rw-r--r-- | src/common/settings.cpp | 17 | ||||
-rw-r--r-- | src/common/settings.h | 11 | ||||
-rw-r--r-- | src/common/settings_enums.h | 2 | ||||
-rw-r--r-- | src/common/signal_chain.cpp | 42 | ||||
-rw-r--r-- | src/common/signal_chain.h | 19 | ||||
-rw-r--r-- | src/common/wall_clock.cpp | 4 |
10 files changed, 320 insertions, 46 deletions
diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt index 289760c40..2c6fc7657 100644 --- a/src/common/CMakeLists.txt +++ b/src/common/CMakeLists.txt @@ -52,6 +52,7 @@ add_library(common STATIC fiber.cpp fiber.h fixed_point.h + free_region_manager.h fs/file.cpp fs/file.h fs/fs.cpp @@ -166,6 +167,13 @@ if (WIN32) target_link_libraries(common PRIVATE ntdll) endif() +if (NOT WIN32) + target_sources(common PRIVATE + signal_chain.cpp + signal_chain.h + ) +endif() + if(ANDROID) target_sources(common PRIVATE @@ -200,7 +208,7 @@ if(ARCHITECTURE_x86_64) target_link_libraries(common PRIVATE xbyak::xbyak) endif() -if (ARCHITECTURE_arm64 AND (ANDROID OR LINUX)) +if (HAS_NCE) target_sources(common PRIVATE arm64/native_clock.cpp diff --git a/src/common/free_region_manager.h b/src/common/free_region_manager.h new file mode 100644 index 000000000..2e590d609 --- /dev/null +++ b/src/common/free_region_manager.h @@ -0,0 +1,55 @@ +// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#pragma once + +#include <mutex> +#include <boost/icl/interval_set.hpp> + +namespace Common { + +class FreeRegionManager { +public: + explicit FreeRegionManager() = default; + ~FreeRegionManager() = default; + + void SetAddressSpace(void* start, size_t size) { + this->FreeBlock(start, size); + } + + std::pair<void*, size_t> FreeBlock(void* block_ptr, size_t size) { + std::scoped_lock lk(m_mutex); + + // Check to see if we are adjacent to any regions. + auto start_address = reinterpret_cast<uintptr_t>(block_ptr); + auto end_address = start_address + size; + auto it = m_free_regions.find({start_address - 1, end_address + 1}); + + // If we are, join with them, ensuring we stay in bounds. + if (it != m_free_regions.end()) { + start_address = std::min(start_address, it->lower()); + end_address = std::max(end_address, it->upper()); + } + + // Free the relevant region. + m_free_regions.insert({start_address, end_address}); + + // Return the adjusted pointers. + block_ptr = reinterpret_cast<void*>(start_address); + size = end_address - start_address; + return {block_ptr, size}; + } + + void AllocateBlock(void* block_ptr, size_t size) { + std::scoped_lock lk(m_mutex); + + auto address = reinterpret_cast<uintptr_t>(block_ptr); + m_free_regions.subtract({address, address + size}); + } + +private: + std::mutex m_mutex; + boost::icl::interval_set<uintptr_t> m_free_regions; +}; + +} // namespace Common diff --git a/src/common/host_memory.cpp b/src/common/host_memory.cpp index ba22595e0..3a9ea6eb4 100644 --- a/src/common/host_memory.cpp +++ b/src/common/host_memory.cpp @@ -21,15 +21,18 @@ #include <boost/icl/interval_set.hpp> #include <fcntl.h> #include <sys/mman.h> +#include <sys/random.h> #include <unistd.h> #include "common/scope_exit.h" #endif // ^^^ Linux ^^^ #include <mutex> +#include <random> #include "common/alignment.h" #include "common/assert.h" +#include "common/free_region_manager.h" #include "common/host_memory.h" #include "common/logging/log.h" @@ -141,7 +144,7 @@ public: Release(); } - void Map(size_t virtual_offset, size_t host_offset, size_t length) { + void Map(size_t virtual_offset, size_t host_offset, size_t length, MemoryPermission perms) { std::unique_lock lock{placeholder_mutex}; if (!IsNiechePlaceholder(virtual_offset, length)) { Split(virtual_offset, length); @@ -160,7 +163,7 @@ public: } } - void Protect(size_t virtual_offset, size_t length, bool read, bool write) { + void Protect(size_t virtual_offset, size_t length, bool read, bool write, bool execute) { DWORD new_flags{}; if (read && write) { new_flags = PAGE_READWRITE; @@ -186,6 +189,11 @@ public: } } + void EnableDirectMappedAddress() { + // TODO + UNREACHABLE(); + } + const size_t backing_size; ///< Size of the backing memory in bytes const size_t virtual_size; ///< Size of the virtual address placeholder in bytes @@ -353,6 +361,55 @@ private: #elif defined(__linux__) || defined(__FreeBSD__) // ^^^ Windows ^^^ vvv Linux vvv +#ifdef ARCHITECTURE_arm64 + +static void* ChooseVirtualBase(size_t virtual_size) { + constexpr uintptr_t Map39BitSize = (1ULL << 39); + constexpr uintptr_t Map36BitSize = (1ULL << 36); + + // This is not a cryptographic application, we just want something random. + std::mt19937_64 rng; + + // We want to ensure we are allocating at an address aligned to the L2 block size. + // For Qualcomm devices, we must also allocate memory above 36 bits. + const size_t lower = Map36BitSize / HugePageSize; + const size_t upper = (Map39BitSize - virtual_size) / HugePageSize; + const size_t range = upper - lower; + + // Try up to 64 times to allocate memory at random addresses in the range. + for (int i = 0; i < 64; i++) { + // Calculate a possible location. + uintptr_t hint_address = ((rng() % range) + lower) * HugePageSize; + + // Try to map. + // Note: we may be able to take advantage of MAP_FIXED_NOREPLACE here. + void* map_pointer = + mmap(reinterpret_cast<void*>(hint_address), virtual_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0); + + // If we successfully mapped, we're done. + if (reinterpret_cast<uintptr_t>(map_pointer) == hint_address) { + return map_pointer; + } + + // Unmap if necessary, and try again. + if (map_pointer != MAP_FAILED) { + munmap(map_pointer, virtual_size); + } + } + + return MAP_FAILED; +} + +#else + +static void* ChooseVirtualBase(size_t virtual_size) { + return mmap(nullptr, virtual_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0); +} + +#endif + class HostMemory::Impl { public: explicit Impl(size_t backing_size_, size_t virtual_size_) @@ -415,8 +472,7 @@ public: } } #else - virtual_base = static_cast<u8*>(mmap(nullptr, virtual_size, PROT_NONE, - MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0)); + virtual_base = virtual_map_base = static_cast<u8*>(ChooseVirtualBase(virtual_size)); if (virtual_base == MAP_FAILED) { LOG_CRITICAL(HW_Memory, "mmap failed: {}", strerror(errno)); throw std::bad_alloc{}; @@ -424,7 +480,7 @@ public: madvise(virtual_base, virtual_size, MADV_HUGEPAGE); #endif - placeholders.add({0, virtual_size}); + free_manager.SetAddressSpace(virtual_base, virtual_size); good = true; } @@ -432,14 +488,29 @@ public: Release(); } - void Map(size_t virtual_offset, size_t host_offset, size_t length) { - { - std::scoped_lock lock{placeholder_mutex}; - placeholders.subtract({virtual_offset, virtual_offset + length}); + void Map(size_t virtual_offset, size_t host_offset, size_t length, MemoryPermission perms) { + // Intersect the range with our address space. + AdjustMap(&virtual_offset, &length); + + // We are removing a placeholder. + free_manager.AllocateBlock(virtual_base + virtual_offset, length); + + // Deduce mapping protection flags. + int flags = PROT_NONE; + if (True(perms & MemoryPermission::Read)) { + flags |= PROT_READ; } + if (True(perms & MemoryPermission::Write)) { + flags |= PROT_WRITE; + } +#ifdef ARCHITECTURE_arm64 + if (True(perms & MemoryPermission::Execute)) { + flags |= PROT_EXEC; + } +#endif - void* ret = mmap(virtual_base + virtual_offset, length, PROT_READ | PROT_WRITE, - MAP_SHARED | MAP_FIXED, fd, host_offset); + void* ret = mmap(virtual_base + virtual_offset, length, flags, MAP_SHARED | MAP_FIXED, fd, + host_offset); ASSERT_MSG(ret != MAP_FAILED, "mmap failed: {}", strerror(errno)); } @@ -447,47 +518,54 @@ public: // The method name is wrong. We're still talking about the virtual range. // We don't want to unmap, we want to reserve this memory. - { - std::scoped_lock lock{placeholder_mutex}; - auto it = placeholders.find({virtual_offset - 1, virtual_offset + length + 1}); + // Intersect the range with our address space. + AdjustMap(&virtual_offset, &length); - if (it != placeholders.end()) { - size_t prev_upper = virtual_offset + length; - virtual_offset = std::min(virtual_offset, it->lower()); - length = std::max(it->upper(), prev_upper) - virtual_offset; - } - - placeholders.add({virtual_offset, virtual_offset + length}); - } + // Merge with any adjacent placeholder mappings. + auto [merged_pointer, merged_size] = + free_manager.FreeBlock(virtual_base + virtual_offset, length); - void* ret = mmap(virtual_base + virtual_offset, length, PROT_NONE, + void* ret = mmap(merged_pointer, merged_size, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0); ASSERT_MSG(ret != MAP_FAILED, "mmap failed: {}", strerror(errno)); } - void Protect(size_t virtual_offset, size_t length, bool read, bool write) { - int flags = 0; + void Protect(size_t virtual_offset, size_t length, bool read, bool write, bool execute) { + // Intersect the range with our address space. + AdjustMap(&virtual_offset, &length); + + int flags = PROT_NONE; if (read) { flags |= PROT_READ; } if (write) { flags |= PROT_WRITE; } +#ifdef HAS_NCE + if (execute) { + flags |= PROT_EXEC; + } +#endif int ret = mprotect(virtual_base + virtual_offset, length, flags); ASSERT_MSG(ret == 0, "mprotect failed: {}", strerror(errno)); } + void EnableDirectMappedAddress() { + virtual_base = nullptr; + } + const size_t backing_size; ///< Size of the backing memory in bytes const size_t virtual_size; ///< Size of the virtual address placeholder in bytes u8* backing_base{reinterpret_cast<u8*>(MAP_FAILED)}; u8* virtual_base{reinterpret_cast<u8*>(MAP_FAILED)}; + u8* virtual_map_base{reinterpret_cast<u8*>(MAP_FAILED)}; private: /// Release all resources in the object void Release() { - if (virtual_base != MAP_FAILED) { - int ret = munmap(virtual_base, virtual_size); + if (virtual_map_base != MAP_FAILED) { + int ret = munmap(virtual_map_base, virtual_size); ASSERT_MSG(ret == 0, "munmap failed: {}", strerror(errno)); } @@ -502,10 +580,29 @@ private: } } - int fd{-1}; // memfd file descriptor, -1 is the error value of memfd_create + void AdjustMap(size_t* virtual_offset, size_t* length) { + if (virtual_base != nullptr) { + return; + } + + // If we are direct mapped, we want to make sure we are operating on a region + // that is in range of our virtual mapping. + size_t intended_start = *virtual_offset; + size_t intended_end = intended_start + *length; + size_t address_space_start = reinterpret_cast<size_t>(virtual_map_base); + size_t address_space_end = address_space_start + virtual_size; + + if (address_space_start > intended_end || intended_start > address_space_end) { + *virtual_offset = 0; + *length = 0; + } else { + *virtual_offset = std::max(intended_start, address_space_start); + *length = std::min(intended_end, address_space_end) - *virtual_offset; + } + } - boost::icl::interval_set<size_t> placeholders; ///< Mapped placeholders - std::mutex placeholder_mutex; ///< Mutex for placeholders + int fd{-1}; // memfd file descriptor, -1 is the error value of memfd_create + FreeRegionManager free_manager{}; }; #else // ^^^ Linux ^^^ vvv Generic vvv @@ -518,11 +615,13 @@ public: throw std::bad_alloc{}; } - void Map(size_t virtual_offset, size_t host_offset, size_t length) {} + void Map(size_t virtual_offset, size_t host_offset, size_t length, MemoryPermission perm) {} void Unmap(size_t virtual_offset, size_t length) {} - void Protect(size_t virtual_offset, size_t length, bool read, bool write) {} + void Protect(size_t virtual_offset, size_t length, bool read, bool write, bool execute) {} + + void EnableDirectMappedAddress() {} u8* backing_base{nullptr}; u8* virtual_base{nullptr}; @@ -535,15 +634,16 @@ HostMemory::HostMemory(size_t backing_size_, size_t virtual_size_) try { // Try to allocate a fastmem arena. // The implementation will fail with std::bad_alloc on errors. - impl = std::make_unique<HostMemory::Impl>(AlignUp(backing_size, PageAlignment), - AlignUp(virtual_size, PageAlignment) + - 3 * HugePageSize); + impl = + std::make_unique<HostMemory::Impl>(AlignUp(backing_size, PageAlignment), + AlignUp(virtual_size, PageAlignment) + HugePageSize); backing_base = impl->backing_base; virtual_base = impl->virtual_base; if (virtual_base) { - virtual_base += 2 * HugePageSize - 1; - virtual_base -= reinterpret_cast<size_t>(virtual_base) & (HugePageSize - 1); + // Ensure the virtual base is aligned to the L2 block size. + virtual_base = reinterpret_cast<u8*>( + Common::AlignUp(reinterpret_cast<uintptr_t>(virtual_base), HugePageSize)); virtual_base_offset = virtual_base - impl->virtual_base; } @@ -562,7 +662,8 @@ HostMemory::HostMemory(HostMemory&&) noexcept = default; HostMemory& HostMemory::operator=(HostMemory&&) noexcept = default; -void HostMemory::Map(size_t virtual_offset, size_t host_offset, size_t length) { +void HostMemory::Map(size_t virtual_offset, size_t host_offset, size_t length, + MemoryPermission perms) { ASSERT(virtual_offset % PageAlignment == 0); ASSERT(host_offset % PageAlignment == 0); ASSERT(length % PageAlignment == 0); @@ -571,7 +672,7 @@ void HostMemory::Map(size_t virtual_offset, size_t host_offset, size_t length) { if (length == 0 || !virtual_base || !impl) { return; } - impl->Map(virtual_offset + virtual_base_offset, host_offset, length); + impl->Map(virtual_offset + virtual_base_offset, host_offset, length, perms); } void HostMemory::Unmap(size_t virtual_offset, size_t length) { @@ -584,14 +685,22 @@ void HostMemory::Unmap(size_t virtual_offset, size_t length) { impl->Unmap(virtual_offset + virtual_base_offset, length); } -void HostMemory::Protect(size_t virtual_offset, size_t length, bool read, bool write) { +void HostMemory::Protect(size_t virtual_offset, size_t length, bool read, bool write, + bool execute) { ASSERT(virtual_offset % PageAlignment == 0); ASSERT(length % PageAlignment == 0); ASSERT(virtual_offset + length <= virtual_size); if (length == 0 || !virtual_base || !impl) { return; } - impl->Protect(virtual_offset + virtual_base_offset, length, read, write); + impl->Protect(virtual_offset + virtual_base_offset, length, read, write, execute); +} + +void HostMemory::EnableDirectMappedAddress() { + if (impl) { + impl->EnableDirectMappedAddress(); + virtual_size += reinterpret_cast<uintptr_t>(virtual_base); + } } } // namespace Common diff --git a/src/common/host_memory.h b/src/common/host_memory.h index 447975ded..cebfacab2 100644 --- a/src/common/host_memory.h +++ b/src/common/host_memory.h @@ -4,11 +4,20 @@ #pragma once #include <memory> +#include "common/common_funcs.h" #include "common/common_types.h" #include "common/virtual_buffer.h" namespace Common { +enum class MemoryPermission : u32 { + Read = 1 << 0, + Write = 1 << 1, + ReadWrite = Read | Write, + Execute = 1 << 2, +}; +DECLARE_ENUM_FLAG_OPERATORS(MemoryPermission) + /** * A low level linear memory buffer, which supports multiple mappings * Its purpose is to rebuild a given sparse memory layout, including mirrors. @@ -31,11 +40,13 @@ public: HostMemory(HostMemory&& other) noexcept; HostMemory& operator=(HostMemory&& other) noexcept; - void Map(size_t virtual_offset, size_t host_offset, size_t length); + void Map(size_t virtual_offset, size_t host_offset, size_t length, MemoryPermission perms); void Unmap(size_t virtual_offset, size_t length); - void Protect(size_t virtual_offset, size_t length, bool read, bool write); + void Protect(size_t virtual_offset, size_t length, bool read, bool write, bool execute = false); + + void EnableDirectMappedAddress(); [[nodiscard]] u8* BackingBasePointer() noexcept { return backing_base; diff --git a/src/common/settings.cpp b/src/common/settings.cpp index 3e829253f..4666bd0a0 100644 --- a/src/common/settings.cpp +++ b/src/common/settings.cpp @@ -41,6 +41,7 @@ SWITCHABLE(AspectRatio, true); SWITCHABLE(AstcDecodeMode, true); SWITCHABLE(AstcRecompression, true); SWITCHABLE(AudioMode, true); +SWITCHABLE(CpuBackend, true); SWITCHABLE(CpuAccuracy, true); SWITCHABLE(FullscreenMode, true); SWITCHABLE(GpuAccuracy, true); @@ -155,6 +156,22 @@ bool IsFastmemEnabled() { return true; } +static bool is_nce_enabled = false; + +void SetNceEnabled(bool is_39bit) { + const bool is_nce_selected = values.cpu_backend.GetValue() == CpuBackend::Nce; + is_nce_enabled = IsFastmemEnabled() && is_nce_selected && is_39bit; + if (is_nce_selected && !is_nce_enabled) { + LOG_WARNING( + Common, + "Program does not utilize 39-bit address space, unable to natively execute code"); + } +} + +bool IsNceEnabled() { + return is_nce_enabled; +} + bool IsDockedMode() { return values.use_docked_mode.GetValue() == Settings::ConsoleMode::Docked; } diff --git a/src/common/settings.h b/src/common/settings.h index 6425cd98f..98341ad96 100644 --- a/src/common/settings.h +++ b/src/common/settings.h @@ -63,6 +63,7 @@ SWITCHABLE(AspectRatio, true); SWITCHABLE(AstcDecodeMode, true); SWITCHABLE(AstcRecompression, true); SWITCHABLE(AudioMode, true); +SWITCHABLE(CpuBackend, true); SWITCHABLE(CpuAccuracy, true); SWITCHABLE(FullscreenMode, true); SWITCHABLE(GpuAccuracy, true); @@ -179,6 +180,14 @@ struct Values { &use_speed_limit}; // Cpu + SwitchableSetting<CpuBackend, true> cpu_backend{ + linkage, CpuBackend::Dynarmic, CpuBackend::Dynarmic, +#ifdef HAS_NCE + CpuBackend::Nce, +#else + CpuBackend::Dynarmic, +#endif + "cpu_backend", Category::Cpu}; SwitchableSetting<CpuAccuracy, true> cpu_accuracy{linkage, CpuAccuracy::Auto, CpuAccuracy::Auto, CpuAccuracy::Paranoid, "cpu_accuracy", Category::Cpu}; @@ -569,6 +578,8 @@ bool IsGPULevelExtreme(); bool IsGPULevelHigh(); bool IsFastmemEnabled(); +void SetNceEnabled(bool is_64bit); +bool IsNceEnabled(); bool IsDockedMode(); diff --git a/src/common/settings_enums.h b/src/common/settings_enums.h index 11429d7a8..d6351e57e 100644 --- a/src/common/settings_enums.h +++ b/src/common/settings_enums.h @@ -129,6 +129,8 @@ ENUM(ShaderBackend, Glsl, Glasm, SpirV); ENUM(GpuAccuracy, Normal, High, Extreme); +ENUM(CpuBackend, Dynarmic, Nce); + ENUM(CpuAccuracy, Auto, Accurate, Unsafe, Paranoid); ENUM(MemoryLayout, Memory_4Gb, Memory_6Gb, Memory_8Gb); diff --git a/src/common/signal_chain.cpp b/src/common/signal_chain.cpp new file mode 100644 index 000000000..2e4fecc48 --- /dev/null +++ b/src/common/signal_chain.cpp @@ -0,0 +1,42 @@ +// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#include <dlfcn.h> + +#include "common/assert.h" +#include "common/dynamic_library.h" +#include "common/scope_exit.h" +#include "common/signal_chain.h" + +namespace Common { + +template <typename T> +T* LookupLibcSymbol(const char* name) { +#if defined(__BIONIC__) + Common::DynamicLibrary provider("libc.so"); + if (!provider.IsOpen()) { + UNREACHABLE_MSG("Failed to open libc!"); + } +#else + // For other operating environments, we assume the symbol is not overridden. + const char* base = nullptr; + Common::DynamicLibrary provider(base); +#endif + + void* sym = provider.GetSymbolAddress(name); + if (sym == nullptr) { + sym = dlsym(RTLD_DEFAULT, name); + } + if (sym == nullptr) { + UNREACHABLE_MSG("Unable to find symbol {}!", name); + } + + return reinterpret_cast<T*>(sym); +} + +int SigAction(int signum, const struct sigaction* act, struct sigaction* oldact) { + static auto libc_sigaction = LookupLibcSymbol<decltype(sigaction)>("sigaction"); + return libc_sigaction(signum, act, oldact); +} + +} // namespace Common diff --git a/src/common/signal_chain.h b/src/common/signal_chain.h new file mode 100644 index 000000000..8d06a1bd1 --- /dev/null +++ b/src/common/signal_chain.h @@ -0,0 +1,19 @@ +// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#pragma once + +#ifndef _WIN32 + +#include <signal.h> + +namespace Common { + +// Android's ART overrides sigaction with its own wrapper. This is problematic for SIGSEGV +// in particular, because ART's handler accesses tpidr_el0, which conflicts with NCE. +// This extracts the libc symbol and calls it directly. +int SigAction(int signum, const struct sigaction* act, struct sigaction* oldact); + +} // namespace Common + +#endif diff --git a/src/common/wall_clock.cpp b/src/common/wall_clock.cpp index caca9a123..012fdc1e0 100644 --- a/src/common/wall_clock.cpp +++ b/src/common/wall_clock.cpp @@ -10,7 +10,7 @@ #include "common/x64/rdtsc.h" #endif -#if defined(ARCHITECTURE_arm64) && defined(__linux__) +#ifdef HAS_NCE #include "common/arm64/native_clock.h" #endif @@ -68,7 +68,7 @@ std::unique_ptr<WallClock> CreateOptimalClock() { // - Is not more precise than 1 GHz (1ns resolution) return std::make_unique<StandardWallClock>(); } -#elif defined(ARCHITECTURE_arm64) && defined(__linux__) +#elif defined(HAS_NCE) return std::make_unique<Arm64::NativeClock>(); #else return std::make_unique<StandardWallClock>(); |